BESSKY 5PCs E27 to E17 Base Socket Holder Adapter Plug Converter - Light Bulb Lamp * Please check the information of the items and your address, it can avoid unnecessary troubles. THANK YOU ! [* IF YOU LIKE OUR PRODUCTS, WELCOME TO Bessky TO CHOOSE WHAT YOU ARE INTERESTED IN.] 1. Size:3.7*3cm. 2. Material: plastic and metal. 3. Home accessories: Ideal for home use. 4. Suitable for Industrial Locations, Bulkheads. Easy and Convenient to use.